Massage roller



FIG. 1 is a plan view of an massage roller, according to the invention;

FIG. 2 is an inverted rear elevation view, thereof;

FIG. 3 is a front elevation view, thereof;

FIG. 4 is a left side elevation view thereof, the right side being a mirror image thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is an upper, perspective view thereof. 

The ornamental design for a massage roller, substantially as shown and described. 